Managed-code-injection

Inject a .NET assembly into a native process using the CLR Hosting API

Step 1: Create the Managed Assembly (CodeInject)

CodeInject: Managed code entry point (typical .NET class library) that provides code that is executed in the target process.

Step 2: Create the Bootstrap DLL (Bootstrap)

Bootstrap: Native DLL that executes code which invokes the .NET runtime that causes managed assembly to be loaded inside the target process.

• CLRCreateInstance Provides one of three interfaces: ICLRMetaHost, ICLRMetaHostPolicy, or ICLRDebugging.
• ICLRMetaHost::GetRuntime Gets the ICLRRuntimeInfo interface that corresponds to a particular version of CLR.
• ICLRRuntimeInfo::IsLoadable Indicates whether the runtime associated with this interface can be loaded into the current process.
• ICLRRuntimeInfo::GetInterface Loads the CLR into current process and returns runtime interface pointer to ICLRRuntimeHost.
• ICLRRuntimeHost::Start Launch the .NET runtime.
• ICLRRuntimeHost::ExecuteInDefaultAppDomain Load managed assembly and invoke the specified method.

Step 3: Inject Bootstrap into target process

Support

Currently supports only 32-bit processes.